<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>表单</title>
</head>
<body>
    <form method="post" action="demo.php" name="name1">
        用户名：<input type="text" ><br/>
        密码：<input type="password" /><br/>
        <input type="checkbox" name="abc">AAA<br/>
        <input type="checkbox" name="abc">bbb<br />
        <input type="checkbox" name="abc">ccc<br />
        <input type="radio" name="sex">actions
        <input type="radio" name="sex">bbbb

    </form>
</body>
</html>